package org.apache.ddlutils.model;

        /*
         * Licensed to the Apache Software Foundation (ASF) under one
         * or more contributor license agreements.  See the NOTICE file
         * distributed with this work for additional information
         * regarding copyright ownership.  The ASF licenses this file
         * to you under the Apache License, Version 2.0 (the
         * "License"); you may not use this file except in compliance
         * with the License.  You may obtain a copy of the License at
         *
         *   http://www.apache.org/licenses/LICENSE-2.0
         *
         * Unless required by applicable law or agreed to in writing,
         * software distributed under the License is distributed on an
         * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
         * KIND, either express or implied.  See the License for the
         * specific language governing permissions and limitations
         * under the License.
         */

import org.apache.ddlutils.util.StringUtilsExt;

import java.util.ArrayList;

/**
 * Base class for indexes.
 *
 * @version $Revision: $
 */
public abstract class IndexImplBase implements Index {
    /**
     * The name of the index.
     */
    protected String _name;
    /**
     * The columns making up the index.
     */
    protected ArrayList _columns = new ArrayList();

    /**
     * {@inheritDoc}
     */
    public String getName() {
        return _name;
    }

    /**
     * {@inheritDoc}
     */
    public void setName(String name) {
        _name = name;
    }

    /**
     * {@inheritDoc}
     */
    public int getColumnCount() {
        return _columns.size();
    }

    /**
     * {@inheritDoc}
     */
    public IndexColumn getColumn(int idx) {
        return (IndexColumn) _columns.get(idx);
    }

    /**
     * {@inheritDoc}
     */
    public IndexColumn[] getColumns() {
        return (IndexColumn[]) _columns.toArray(new IndexColumn[_columns.size()]);
    }

    /**
     * {@inheritDoc}
     */
    public boolean hasColumn(Column column) {
        for (int idx = 0; idx < _columns.size(); idx++) {
            IndexColumn curColumn = getColumn(idx);

            if (column.equals(curColumn.getColumn())) {
                return true;
            }
        }
        return false;
    }

    /**
     * {@inheritDoc}
     */
    public boolean hasColumn(String columnName, boolean caseSensitive) {
        for (int idx = 0; idx < _columns.size(); idx++) {
            IndexColumn curColumn = getColumn(idx);

            if (StringUtilsExt.equals(columnName, curColumn.getName(), caseSensitive)) {
                return true;
            }
        }
        return false;
    }

    /**
     * {@inheritDoc}
     */
    public void addColumn(IndexColumn column) {
        if (column != null) {
            for (int idx = 0; idx < _columns.size(); idx++) {
                IndexColumn curColumn = getColumn(idx);

                if (curColumn.getOrdinalPosition() > column.getOrdinalPosition()) {
                    _columns.add(idx, column);
                    return;
                }
            }
            _columns.add(column);
        }
    }

    /**
     * {@inheritDoc}
     */
    public void removeColumn(IndexColumn column) {
        _columns.remove(column);
    }

    /**
     * {@inheritDoc}
     */
    public void removeColumn(int idx) {
        _columns.remove(idx);
    }
}
